Answer:
The correct answer is letter "B": Yes, but there is only a range of payments that the spa will pay the mechanic to make them both better off.
Explanation:
The spa must analyze the benefit-cost of the possible solution for the noise problem. A spa itself cannot provide a noisy atmosphere to its clients. Moving the spa to the next best building implies spending $350 monthly more for rent. However, the mechanic can eliminate the noise with a device that costs $275 per month. Thus, the spa should share the expenses with the mechanic for the noise-elimination device to reduce the costs of having a noise-free environment obtaining the benefit desired.